Malicious PDF — malware analysis report

Static analysis result for SHA-256 2842c5e3f03b7b29…

MALICIOUS

PDF

44.4 KB Created: 2020-09-21 18:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eda96090e54c12f5fcb0ea022db5df90 SHA-1: 00c7ca065afa18edd04e7d3c0478618d993bc310 SHA-256: 2842c5e3f03b7b29a046114e4b4b9dc8c9a41af92485a3ee18938d2c81cf5d91
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a deceptive lure for a Home Depot sales associate interview, directing users to a malicious URL. The document body, though partially corrupted, contains the target URL and references to job searching. The presence of numerous external PDF links, including a known malicious redirector, indicates a phishing or scam attempt. No scripts were extracted, but the primary attack vector is the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/wix?keyword=home+depot+sales+associate+interview
    • http://files.alexandertechniqueforviolinists.com/uploads/1/3/2/7/132712088/zevivazesov_vijusefuregoku_loxozivok.pdf
    • http://xiwavom.bpwnjfoundation.org/uploads/1/3/1/3/131383544/bf3cabb90f.pdf
    • http://vaduse.customcontractinginc.com/uploads/1/3/1/8/131856695/4277079.pdf
    • http://tenem.kassandradimopoulou.com/uploads/1/3/1/4/131407995/pafazevupinu_zotuv.pdf
    • http://mirat.thejunkmanadv.com/uploads/1/3/2/8/132815004/8138044.pdf
    • http://fimumixiv.shelbyfop84.com/uploads/1/3/1/6/131606111/a521cf.pdf
    • http://bokun.amychally.com/uploads/1/3/1/0/131070054/5bf6d8e240.pdf
    • http://files.saintsjamesandandrew.org/uploads/1/3/1/3/131383821/lesanuzemetonan_xubopigetukek.pdf
    • https://c96a04d8-31f3-4bee-ad6b-3ce0be15a
    • https://81b8b962-8aa1-4239-b370-01793f7306a0.filesusr.com/ugd/2eff39_c8f50e447e884429a28f85ef5cf90117.pdf?index=true
    • https://c5a74455-2b1a-4155-a185-7bc5e8f812d7.filesusr.com/ugd/8ba634_0049df652e0b48d9924b8d2cab0d0cce.pdf?index=true
    • https://d5c037d3-b522-4652-aba6-4195db594da2.filesusr.com/ugd/fc3b0b_5b221062e5c4486e86fa3bae4c1d9e07.pdf?index=true
    • https://ea756847-d2d4-432f-a4a8-b6a75529a035.filesusr.com/ugd/9a242c_73e914d3371442cc9ff922223c4857d1.pdf?index=true
    • https://23fbd68a-747e-4779-be34-828d1416e383.filesusr.com/ugd/d63aaf_de7a188297cc4cbd83eadb0efbda855b.pdf?index=true
    • https://c7d34a5c-050f-4701-b298-68df0ee1f5ad.filesusr.com/ugd/e49726_877c7e98899047b4a77beda563a4a662.pdf?index=true
    • https://c5e67610-e5ee-4443-9df6-deecee073703.filesusr.com/ugd/787b0a_007559a44cc74a2eaf3d96d9aeb4cc8b.pdf?index=true
    • https://b5fb23b7-dfe3-4216-a506-1f988bba36f4.filesusr.com/ugd/9b5f63_44ceedcb5e7e44ed8b6599bde3e40a1c.pdf?index=true
    • https://c96a04d8-31f3-4bee-ad6b-3ce0be15a46b.filesusr.com/ugd/cacfd7_6a3fd005dfb34cf5b1f754ca52ed7cee.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e2e.bin
a9df0edad34d14056c3ebec7c63241f9970cf07869b558a71d6b69be3b57e11e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2E 5332 bytes
font_01_sfnt_off00008045.bin
47c0e7d5f5a4da2630723c8fb506fc43b4ac7687fdd637e68c522bb0c81f98b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8045 10704 bytes

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